00003-medium-omit.ts

// ============= Test Cases =============
import type { Equal, Expect } from './test-utils'

type cases = [
  Expect<Equal<Expected1, MyOmit<Todo, 'description'>>>,
  Expect<Equal<Expected2, MyOmit<Todo, 'description' | 'completed'>>>,
]

// @ts-expect-error
type error = MyOmit<Todo, 'description' | 'invalid'>

interface Todo {
  title: string
  description: string
  completed: boolean
}

interface Expected1 {
  title: string
  completed: boolean
}

interface Expected2 {
  title: string
}


// ============= Your Code Here =============
type MyPick<T, K extends keyof T> = {
  [P in K]: T[P]
}
type MyExclude<T, K> = T extends K ? never : T

type MyOmit<T, K extends keyof T> = MyPick<T, MyExclude<keyof T, K>>
type A = MyOmit<Todo, 'description'>